Ozzy Osbourne 's cause of death has been determined. According to a death certificate obtained by the New York Times and The Sun , the legendary rock star died of "out of hospital cardiac arrest" and "acute myocardial infarction," with coronary artery disease and Parkinson's disease with autonomic dysfunction listed as "joint causes."

Ozzy Osbourne died of a heart attack and had coronary artery disease in addition to suffering from Parkinson’s disease for years, his death certificate said.